字段过滤

FieldFilter ff = FieldFilter.create(WeatherKCData.class, "^WS|WD$");
        Pager pager = dao.createPager(pageNumber, pageSize);
        List<WeatherKCData> list = Daos.ext(dao, ff).query(WeatherKCData.class, null, pager);

返回结果

{
   "list": [{
      "id": null,
      "MAXT": null,
      "MINT": null,
      "WS": "2-3",
      "WD": "东",
      "STATE": null,
      "DDATE": null,
      "TIMEKC": null
   }, {
      "id": null,
      "MAXT": null,
      "MINT": null,
      "WS": null,
      "WD": "东",
      "STATE": null,
      "DDATE": null,
      "TIMEKC": null
   }, {
      "id": null,
      "MAXT": null,
      "MINT": null,
      "WS": "3-4",
      "WD": "东南",
      "STATE": null,
      "DDATE": null,
      "TIMEKC": null
   }],
   "pager": {
      "pageNumber": 4,
      "pageSize": 3,
      "pageCount": 4,
      "recordCount": 12
   }
}

这样算是正常过滤了吗？